When you have already typed qwertyuiopasdfghjklzxcvbnm but then thought you'd be a smartass by typing numbers
" ok now we are going to write a 5 page essay on William Shakespeare " says Mrs.Loren. 5 minutes later Jonny gets bored and types qwertyuioasdfghjkzxcvbnm then `1234567890-=asdfghjkl;;'zxcvbnm,./.